CVE-2026-63862 (GCVE-0-2026-63862)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-19 14:04
VLAI
Title
PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found In mtk_pcie_setup_irq(), the IRQ domains are allocated before the controller's IRQ is fetched. If the latter fails, the function directly returns an error, without cleaning up the allocated domains. Hence, reverse the order so that the IRQ domains are allocated after the controller's IRQ is found. This was flagged by Sashiko during a review of "[PATCH v6 0/7] PCI: mediatek-gen3: add power control support".
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6856 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < abd3c1927d33766aef39c4640880e3d2637429c2 (git)
Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < 07a5ecb94768cbf76fe659e9924000e9ced0c8a6 (git)
Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < 946b31b5a699a2760ee52af0055e5ebf29c5f4cb (git)
Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < 0a2d60edc3e57c9512e239ebdfd12204d3368560 (git)
Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < 215d4273347b9010a9deae378b0df79c163f707d (git)
Affected: 814cceebba9b7d1306b8d49587ffb0e81f7b73af , < 5573c44cb3fd01a9f62d569ae9ac870ef5f0e0ba (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-mediatek-gen3.c"
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      ],
      "cpeApplicability": [
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found\n\nIn mtk_pcie_setup_irq(), the IRQ domains are allocated before the\ncontroller\u0027s IRQ is fetched. If the latter fails, the function\ndirectly returns an error, without cleaning up the allocated domains.\n\nHence, reverse the order so that the IRQ domains are allocated after the\ncontroller\u0027s IRQ is found.\n\nThis was flagged by Sashiko during a review of \"[PATCH v6 0/7] PCI:\nmediatek-gen3: add power control support\"."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:04:49.380Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/abd3c1927d33766aef39c4640880e3d2637429c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/07a5ecb94768cbf76fe659e9924000e9ced0c8a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/946b31b5a699a2760ee52af0055e5ebf29c5f4cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a2d60edc3e57c9512e239ebdfd12204d3368560"
        },
        {
          "url": "https://git.kernel.org/stable/c/215d4273347b9010a9deae378b0df79c163f707d"
        },
        {
          "url": "https://git.kernel.org/stable/c/5573c44cb3fd01a9f62d569ae9ac870ef5f0e0ba"
        }
      ],
      "title": "PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63862",
    "datePublished": "2026-07-19T14:04:49.380Z",
    "dateReserved": "2026-07-19T07:54:57.017Z",
    "dateUpdated": "2026-07-19T14:04:49.380Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-10-21",
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      "percentile": "0.11216"
    },
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                "programFiles": [
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                ],
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found\n\nIn mtk_pcie_setup_irq(), the IRQ domains are allocated before the\ncontroller\u0027s IRQ is fetched. If the latter fails, the function\ndirectly returns an error, without cleaning up the allocated domains.\n\nHence, reverse the order so that the IRQ domains are allocated after the\ncontroller\u0027s IRQ is found.\n\nThis was flagged by Sashiko during a review of \"[PATCH v6 0/7] PCI:\nmediatek-gen3: add power control support\"."
          }
        ],
        "id": "CVE-2026-63862",
        "lastModified": "2026-07-27T17:44:23.777",
        "metrics": {},
        "published": "2026-07-19T15:16:53.097",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-08-07T13:24:05+00:00",
      "cve": "CVE-2026-63862",
      "id": "CVE-2026-63862",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63862.json",
      "version": "3"
    }
  }
}



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